# Abismo Guy Collet

- **Country:** Brazil
- **Depth:** 671 m
- **Geology:** quartzite
- **Location:** Barcelos, Amazonas, Brazil
- **Discovery:** 2006

The Abismo Guy Collet (SP-090) is the deepest cave in South America, and the deepest in the world that is formed in quartzite. Located in a tepui in northern Brazil near the border with Venezuela, this cave was first explored by cavers in 2006 to a depth of .

**Source:** https://en.wikipedia.org/wiki/Abismo_Guy_Collet (Wikipedia, CC BY-SA)